Thrust collar



1. H. REEDY. Y

THRUST COLLAR.

\ APPLICATION FILED IIIAYZ?. I920.

1,409,576. Patented Mar. 14, 1922.

NRM@ 5y lJ/l/Q UNITED STATES PATENT OFFICE.

JOHN H'. REEDY, OF HAMILTON, OHIO.

THRUST COLLAR.

To all whom t may concern:

Be it-known that I, JOHN H. REEDY, 'a

citizen of the United States, and a resident of Hamilton, Butler County, Ohio, have invented a certain new and useful Thrust Collar, of which the following is a full, clear, and exact description, reference being had to the drawings forming part of this specification.

My invention relates to collars, particularly for use in maintaining a roll on ashaft against endwise motion. In paper m1 ll practice, for example, the paper after it 1s brought over a slitter, is wound onto separate rolls, bymeans of contact with a rotating surface applied to the paper, the paper itself being brought over cores or the like set on a freely turning shaft that rests by gravity against the rotating surface.

ln such a case there will be a number of rolls of paper wound from the several longitudinal sections of the paper coming over the slitter and any endwise shifting of the rolls of paper on the winding device will obviously result in an imperfect roll, and usually will quickly make necessary a stoppa e of the machine and Winder.

ollars are required for application to the paper roll shafts, in Winder rolls of the above character, which can be set in place and removed with ease, and which when in place will hold the paper in fixed position against any endwise play. The use of set screws in such collars is not only likely to result in an ineffective hold, but also in considerable danger to the operator. lt is practically impossible to enforce the use of short set screws on machine operators because of the diiliculty of getting at them, and when lon screws arel in use there is always a projecting metal part revolving rapidly at a point where the operator may often be called upon to work.

lt is the object of my invention to provide a self locking collar for preventing endwise thrust, which adapts itself among other things to the above noted use, and which is so constructed and designed as to take care of the work of this character.

l accomplish my objects by that certain construction and arrangement of parts to be hereinafter'more specically pointed out and claimed.

ln the drawings, l

Figure l is an end elevation of the collar Specification of Letters Patent'.

, taken Ytoward Patented Mar. 14,

1922. 1920. seria1No.3s4,e17. i

the thrust receivin end thereof. g

Figure 2 is a section taken on the line 2 2 of `Figure l.

Figure 3 is a perspective view of a modiiedform of collar.

Figure 4 is a view partially diagrammatic of the collar in use in a paper Winder.

`The collar comprises three main sections, viz., a thrust receiving ring, a roller retaining bushlng and a controlling ring threaded on the thrust receiving ring and adjusting the bushing with relation thereto.

The thrust receiving ring or collar l has a threaded portion 2 at the one end thereof, over which, in my preferred construction, is threaded the controlling ring or collar 3. The collar carries a plate or plates 4, which may be mounted on the collar 3 by screws, as at 5, and whlch engage a groove 6 in the bushing 7. By screwing the controlling ring up on the collar l, the bushing may be advanced through the interior of the said co1- 4lar or retracted therethrough.

Preferably' three knurled rollers 8 are p provided,- said rollers being of very hard metal and knurled spirally so as to grasp firmly any metal part against which they are pressed. The rollers have axis pins 9, 9, which are engaged between the bushing and the thrust collar portion l. The bushing is cut with open slots 10` at its forward end and the metal on the outside of the bushing at the edges of the slots cut away as at 1l. The slots l0 provide clearance for the rollers, and the undercut portions l1 provide an elongated pocket for the axis pins or spindles of thev rollers so `as to permit them to slide or rolland also to move laterally.

i ln addition to the cut and 1l, the thrust collar with three main grooves l2 which taper at the base, so as to be deepest at the rear end thereof and the shallowest at the forward or thrust receiving end.

Alongside of the grooves l2 which are of a width to receive the peripheries of the rollers', there are shallow, narrow cutsl 13, made to accommodate the spindles or axis pins of the rollers.

rlhe cuts l1 do not extend the full length of the sides of the slots 10 and thus permit only a limited movement of the spindles of the rollers, and the movement ofthe bushing away portions 10 is internally cut through the collar 1 will cause the rollers to ride along the bases of the grooves 12, said bases, as a result of their incline, acting either to force the rollers inwardly or permit them to move outwardly.

The device is assembled with the rollers set in the slots of the bushing and riding in the grooves of the thrust receiving ring. It may then be readily slipped onto the shaft, with which it is to be used. As shown 1n Figure 4 the thrust receiving end is brought up against the core pieces 14 on the shaft 15, and the controlling ring turned on the thrust receiving portion so as to cause the bushing to force the rollers forwardly and cause them to b-ite into the shaft.

Due to the fact that the rollers have some play in the bushing, their spindles being free to roll a considerable distance, 1t may be observed that when the bushing has been moved forwardly as far as i-t will go, the rollers will still have considerable chance of .forward movement with relation t-o both the bushing and the thrust ring.

Accordingly the bushing may be adjusted in place and held there', as by means of the threads of the controlling ring, and should there be any tendency to slip further the rollers will ride up further onto the shallowest portions of the grooves 12. This they will do because of their bite into the shaft and the movements under such circumstances of the thrust ring with relation to the shaft.

An alternative structure, which is more quickly operated is shown in Figure 3 in which the controlling ring instead of being screwed onto the thrust ring, is provided with a slanting closed slot 16, which engages over a screw or other detachable headed post 1T mounted on the rearportion of the thrust ring. The operation of the slot over the post is the same as the operation of a thread and needs no additional description,

far as I am aware, no one in the past has provided a thrust collar device for mounting on shafts, which is adjustable to a fixed clamped position over the shaft, and has in addition a movable part which while locked in a. position of shaft engagement has still an additional possibility of movement in case the locked position is not adequate to withstand the thrust.

I do not wish to be limited in the scope of my invention because of my description of but one main form of device, since my description and drawing are rather intended as illustrating a preferred embodiment of my invention and have been selected for purposes of easy illustration of the principles thereof.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is

- 1. In a device of the character described, the combination of a thrust receiving member, to mount over a shaft, a member mounted within said thrust receiving member and adapted to retain the roller or `rollers transverse the axis of the shaft, anda controlling member adjustable on the thrust receivingmember and connected to the roller retaining member whereby the relative positions of the said retaining member and thrust receiving member may be controlled, sai'd rollers being adapted to engage the shaft and one of said members.

2. In a device of the character described, the combination of a thrust receiving member, to mount over a shaft, a member mounted within said thrust receiving member and adapted to retain the roller or rollers transverse the axis of the shaft, and a controlling member adjustable on the thrust receiving member and connected toy the roller retaining member whereby the relative positions of the said retaining member and thrust receiving member may be controlled, said rollershaving spiral grooves cut in the surface thereof and said rollers being adapted to engage the shaft and one of said members.

3. In a device ofthe character described, the combination of an outer member, a series of grasping elements, an inner member for mounting said elements so as to permit movement thereof longitudinally of the outer member, tapered means on the outer'member for engaging said grasping elements,

and means for locking the inner member in fixed position on the outer member, without preventing longitudinal movement of the grasping membersv in one direction at least with relation to the outer member.

4. In a device of the character described, an outer and an inner member, means for ixedly adjusting their relative positions, said outer member having grooves having slanting bases cut therein, a series of grasping elements, means for mounting them in the inner member for permitting a limited longitudinal movement of them with relation to said inner member.

5. In a device of the character described, an outer and an inner member, means for iiredly adjusting their relative positions, said outer member having grooves having slanting bases cut therein, a series of grasping elements, means for mounting them in the inner member for permitting a limited longitudinal movement of them with relation to said inner member, said elements comprising hard metal rollers, having knul-led surfaces.

6. In a device of the character described, an outer and an inner member, means for fixedly adjusting their relative positions, said outer member having grooves having slanting bases cut therein, a series of grasping elements, means for mounting them in the inner member for permittinga limited longitudinal movement of them with relation i i `l l t0 Sald 1111181' member, Said elements COIIIPI'IS- ing hard metal rollers, having knurled surfaces out with spiral grooves.

7. In a device ofthe character described, the combination with an outer collar and an inner bushing, external threads on the outer member, a ring threaded onto said` threads and having means for engaging the bushing, open slots in the bushing having short 10' grooves on two Walls of the slots, knurled rollers having spindles to ride in the short rollers adapted to ride in said grooves, and l5 said grooves having bases sloping inwardly tovard the thrust receiving end of the'outer col ar.

JoHN H REEDY. 

